Mathematics, 23.07.2019 17:30 dontcareanyonemo
The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. a random sample of 20 bulbs has a mean life of x = 1014 hours. (a) construct a 99% two-sided confidence interval on the mean life. (b) construct a 99% lower-confidence bound on the mean life. compare the lower bound of this confidence interval with the one in part (a).
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Mathematics, 21.06.2019 22:00, gerardoblk5931
Question 10 of 211 pointuse the elimination method to solve the system of equations. choose thecorrect ordered pair.10x +2y = 643x - 4y = -36a. (4,12)b. (-3, 11)c. (2,10)d. (-5, 8)
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Mathematics, 21.06.2019 22:00, angeline2004
Given the quadratic function f(x)=3x^2-24x+49 a. use “completing the squares” to convert the quadratic function into vertex form b. state the vertex c. find the x and y intercepts d. graph the function
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The life in hours of a 75-watt light bulb is known to be normally distributed with σ = 25 hours. a r...
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